Flight number record

OO 6334

SkyWest Airlines · Phoenix to Durango

Route: PHX → DRO
Departs: 21:45
Flights: 265
Period: July 2025 to June 2026

Historical statistics for July 2025 to June 2026, not live status. For today’s OO 6334, check with SkyWest Airlines. SkyWest Airlines flies under contract for larger airlines, so a ticket for this flight may show a different airline code and number.

OO 6334 lands a B+, about a point worse than the national rate of 77.6%. About one flight in four arrives 15 minutes late or worse, and those flights are late by close to two hours on average. That is a workable record, not a spotless one. That rests on 265 flights, with a median arrival 4 minutes early.

On time

76.2%

Arrivals under 15 minutes late, of 265 completed flights

Avg delay

111 min

Across delayed arrivals only, not all flights

Cancelled

0.00%

National rate is 1.81%

1 hour+ late

9.8%

National rate is 8.1%

These figures cover 265 flights between July 2025 and June 2026. Beyond the headline rate, 9.8% of arrivals land a full hour or more behind schedule. That is the number that wrecks a connection, and it is not visible in an on-time percentage alone.

Schedule

When OO 6334 flies

OO 6334 flies PHX to DRO without a single fixed slot. Its most common scheduled departure was 21:45, used on 74 of 265 flights, with 19:23 (36 flights) and 19:54 (30 flights) next. Carriers retime flights through the season, so the rates here blend slightly different positions in the aircraft's day.

Departs 21:4574 flights27.9%
Departs 19:2336 flights13.6%
Departs 19:5430 flights11.3%

Scale runs 0% to 100%. Rows with fewer than 30 flights show a dash.

Share of scheduled departures at each local time. Times used on fewer than one flight in ten are not listed.

A 21:45 departure sits in the 8pm–5am window. Across every US flight scheduled in that window the on-time rate is 70.5%, and OO 6334 runs 6 points better at 76.2%. By that time of day most aircraft have flown several legs already, and whatever went wrong earlier is still in the schedule.

Against the route

OO 6334 next to PHX to DRO

Every carrier on PHX to DRO combined arrived on time 80.5% of the time across 993 flights, so OO 6334 is 4 points behind it. Across its whole network SkyWest Airlines managed 79.0%, which this flight trails by 3 points.

OO 6334 against its route and carrier
Compared with	Flights	On time	Avg delay	Cancelled	Grade
OO 6334thin sample	265	76.2%	111 min	0.00%	B+
All SkyWest Airlines on PHX–DRO	993	80.5%	81 min	0.40%	B+
All carriers on PHX–DRO	993	80.5%	81 min	0.40%	B+
SkyWest Airlines, whole network	852,935	79.0%	88 min	1.77%	B

Across the year

OO 6334 quarter by quarter

OO 6334 did not run the same all year. Its best quarter was Apr–Jun 2026 at 85.5% on time and its weakest Jan–Mar 2026 at 62.0%, a swing of 24 points on roughly 66 flights a quarter. The twelve-month rate averages over that, so if you are flying in a weak quarter the quarter's own figure is the better guide.

Jul–Sep 202557 flights80.7%
Oct–Dec 202554 flights75.9%
Jan–Mar 202671 flights62.0%
Apr–Jun 202683 flights85.5%

Scale runs 55% to 90%. Rows with fewer than 30 flights show a dash.

By weekday, OO 6334 did best on Monday at 78.7% on time and worst on Friday at 66.7%. Each day rests on about 38 flights, so a gap of 12 points is worth noticing but could still narrow in another year.

Delay causes

Why OO 6334 runs late

One category carries most of the weight here. Carrier accounts for 62% of the 7,001 delay minutes carriers reported, and the remaining four split what is left. The split is by minutes rather than by flights, so a few very long delays count for as much as many short ones.

Carrier
62%
Late-arriving aircraft
30%
National Airspace System
9%

The largest share of delay minutes, 62%, falls under carrier control: crew scheduling, maintenance, fuelling, baggage. Unlike weather, that is a management outcome, and it is the category where the gap between two carriers on the same schedule is genuinely earned. It accounts for 4,309 of the 7,001 delay minutes reported here. The split is drawn from 7,001 delay minutes reported on OO 6334.

Cancellations are rare at 0.00%, below the national 1.81% and low enough to earn the plus on the grade. Almost no flights are called off; the risk here is arriving late, not not arriving.

Connections and routes

What a delay on this flight costs

For anyone connecting, the number to weigh is not the on-time rate but the tail behind it. 9.8% of arrivals land a full hour or more behind schedule, against 8.1% nationally. A 45-minute layover does not survive that, and no amount of walking quickly changes it. Ninety minutes is the honest minimum here, and two hours if the onward flight is on a separate ticket.

Every one of the 265 flights under OO 6334 in the data flew PHX to DRO. The number was not reused on any other city pair, which makes this a clean record of one route.

One caution: this is a thin sample. 265 flights over twelve months is enough to clear this site's floor but not enough to pin the rate down tightly, and a single bad week moves it by more than a point. Treat the grade as a rough reading.

What to do with this

Booking OO 6334

For a booking, read OO 6334 as 76.2% on time with 0.00% cancelled over 265 flights. Those are rates from the past twelve months, not a forecast for any particular day.

Where to go next

A flight number here means SkyWest Airlines’s own number as it reports to the DOT. How the figures are computed is on the methodology page.

Source: US DOT Bureau of Transportation Statistics, on-time performance data, July 2025 to June 2026. Last updated 15 September 2026; recomputed monthly. How this data is collected.

Key figures